Adolf pieokeehoff



fiTAVAL he e DOLE DIEQKERHQFF, OF VIEXNA, AUSTRIA, ASSI GNOB TO M. FURMAN HUKT, ()1 NEW YORK, N. Y.

iidPfiQVEZMENT EN EXPLQSiVE CQMPGUNDS.

Specificationforming part of Letters PatentNo. QRSJEBQ dated Mayo, 1879; application filed July 30, 1878.

To all whom it may concern: I

Be it known that I, ADOL'F Drnorrnnrrorr, of Vienna, Empire of Austria, now temporarily a resident of St. iz etersbnrg, in the Eur pire of Russia, haveinvented a certain new and Improved Explosive Qoinponnd and Profor Manufacturing the some; and I do hereby declare the following to be a foil and exact description. thereof, wnieh will enable others skilled in the art to which it appertains, or to which it is inost closely connected, to make and use the same.

The object of this invention is to increase the explosive strength of gunpowder without increasing-its iiability to accidental ignition; and to this end the invention consists in combining or mixing gunpowder {or its essential elements taken uthe same relative proper tions as in gunpowder) with a small proportion (not over fifteen per cent.) of a precipitated alkaline piors-te or piorates, substantially as I will now proceedto describe.

In the manufacture oi my improved exploeive I take any alkaline picrate, precipitate, or precipitates, such as sodium pierate, potasshun pier-ate, or ammonium. picrate, or any mixture of two or more thereof, precipitated from the mother liquor or liquors, and I combine said precipitate or precipitates with gunpowder in such proportions that one hundred (190) parts, by weight, of the explosive will contain from one 1) to fifteen (15) parts picrate precipitate and eighty-five (S5) to ninetynine (99) parts gunpowder. The mixture forms an explosive having much greater-energy than gunpowder, and it is .i'ar safer for hand iiug', storage, and transportation, inasmuch as it requires a higher degree 0E heat for ignition, and does not explode by percussion.

Experiencehas shown that the charcoal of the. gunpowder is not essential in this 00111: pound orIniXture, the character and effect oi the explosion being substantially the same whether it is used or not; wherefore I regard the mixture of the nitrate with the sulphur and the pierate, in the same general proportions as above stated, as the practical equivalent of the mixture above described.

The mode of compounding, graining, &e., is substantially the same as in the minutiaeture of gunpowder. Due care must be observed, however, in'handling the picrate be.- i'ore its incorporation with the other elements.

Having thus described my invention, claim as new The explosive 'IIHXEHI'G or compound herein described, consisting of sulphur, a nitrate or nitrates, and a preeipitateo alkaline piorate or picrates, compounded in the manner and in the relative proportions, substantially as set forth.

ADOLF Discuss-Hour.

fv'itnesses W. W. Rowmrr JOHN G. GUMMING. 

